如果which在從中做主語看先行詞,先行詞是單數(shù)謂語三單,先行詞復(fù)數(shù)謂語復(fù)數(shù),如果which修飾整個句子,一般用單數(shù)She is an artist,which I am not.她是一位藝術(shù)家,而我不是.Water,which is a clear liquid,has many uses.水是一種清澈的液體,有許多用途.The two policemen were completely trusted,which in fact they were.那兩個警察完全受到信任,事實上,也真是如此.② which指代主句中的形容詞.如：She was very patient towards the children,which her husband seldom was.她對孩子們很耐心,她丈夫卻很少這樣.She is always careless,which we should not be.她總是馬虎大意,我們可不應(yīng)該這樣.③ which指代主句中的某個從句.如：He said that he had never seen her before,which was not true.他說以前從沒見過她,這不是真的.④ which指代整個主句.如：In the presence of so many people he was little tense,which was understandable.在那么多人面前他有點緊張,這是可以理解的.He may have acute appendicitis,in which case he will have to be operated on